Improvement in machines for drilling the shanks of rivets



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M. BRAY. MACHINE FUR DRILLING THE SHANKS 0F RIVETS.

No.188,773. Patented March 27,1877.

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N.FETERS. FHOTU-LITMOGRAFHER. WASHINGTON. D CA 5 Sheets-Sheet 3.

M. BRAY.

MACHINE FOR DRILLING THE SHANKS 0F RIVETS. No.188,773. Patented March27,1877.

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N. PETERS. PHOTO-LITHOGRAFHER, WASHINGTON. D C

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` M. BRAY. MACHINE FOR DRILLING THE SHANKS 0F RIVETS. No.188,773. Patented March 27,1877.

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NAPETERS. PHOTO-LlrHOGHAPHER, WASHINGTQNy D c described INrrEn STATESPATENT' rien.

MELLEN BRAY, OF NEWTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES` FOR DRILLING THE SHANKS OF RIVETS.

Specification forming part of Letters Patent No. 188,773, dated March27, 1877; application filed October 2, 1876.

for drilling out vthe body or shank of a rivet after the rivet has beenformed by a previous operation, so as to make said shank a thin hollowtube, capable of being clinched upon the material in which it is set byturning the end of said tubular shank over onto the material in the samemanner that eyelets are set, and is an improvement upon the invention inLetters Patent No. 166,963, granted to me August 24, 1875.

My invention consist-s, first, in mounting the clamping dies or jaws,which seize and hold the rivet while it is being drilled, upon thesupplementary or movable frame which carries the` intermittentlyrotating carrierwheel, and other rivet separating and feeding devices,and adapting said clamping -jaws to be coupled with the operating-leversfor ini-- parting ni'otion thereto, mounted on the main frame when thesu)` lementar frame is secured in positionon the main frame, and to bereadily disengaged from said .levers by moving said supplementary frameback on the main frame, as will be described.

4My inventionfurther consists inthe use, in combination with anintermittently-rotated carrier-wheel, provided With pockets in itsperiphery totreceive and carry in succession a series of rivets to 4aposition in t'ront ot' the drill, an inclined chute, down which saidrivets slide in a single line, with their heads all in one direction,and a reciprocating plunger arranged to move in a suitable channel-way,and feed the rivets successively from the foot of the inclined chuteinto the pockets of the carrier-wheel ot' a discharge-chute orchannelsame pocket a drilled rivet into said discharge channel-way withits head downward.

My invention further consists in forming upon the outer end ot' saiddischarge-chute or channel-way a broad, shallow, Hat-bottomed tray orreceptacle, the upper surface of the bottom of which coincides with thebottoni of the discharge end of the groove in said channel-way, in whichthe discharged rivets may accumulate until inspected by the operator.

My invention further consists in the use, in combination with aninclined chute, down which the rivets slide in a single line With theirheads all in one direction, and a reciprocating plunger arranged to movein a suitable channel-way at right angles to said chute, and feed therivets successively trom the foot of the inclined chute, ot' areciprocating wedge, adapted to pass between the lower rivet in theinclined chute and those above it, forcing said lower rivet into thehorizontal channelway in front of the reed-plunger, and retaining thoseabove it in their position in the chute till the feed-plunger has passedthe end of the inclined chute in its movement toward the carrier-wheel,and then recede to allow the rivets to descend the chute till the lowerone rests against the side oi' the feed-plunger.

My invention further consists in the use, in combination with anintermittently-rotating carrier wheel or disk, provided with a seriesot' pockets in its periphery, each adapted to receive a rivet and conveyit to the drillingtool, a pair ot' clamping-dies, anautomatically-operated drill, and a detent-wheel, having formed in itsperiphery as many notches or detents as there are pockets in thecarrierwheel, and mounted upon the shaft of said carvier-wheel, of areciprocating detenta-rod, arranged in a position radial to the axis ot'the detent-Wheel, and a cam, arranged and adapted to move saiddetent-rod endwise, and force its end into a notch in the detent-wheel,to correct any inaccuracy in the position ot the carrier-wheel relativeto the drill, and lock it in such position till again released by therotation of said cam after the drill has completed its Work upon therivet, and been withdrawn therefrom.

My invention further consists in mounting said anti-friction trucks,upon which the cams act to operate the clamping-levers, upon studs setin rectangular boxes or blocks titted to slots made through the ends ofthe long arms of said levers, and adapted to be adjusted transverselyot' said levers by means of set` screws working in nuts formed in saidlevers, and bearing against said blocks for the purpose of regulatingthe pressure of the clamping-jaws upon the rivet, and to compensate forthe wear of the parts.

My invention further consists in making each of said rectangular boxesor blocks in two parts, the line of separation being parallel to theupper and lower surfaces of that portion ofthe lever into which they areto be inserted,and each of said parts being provided with a lip or lips,to bear upon the upper and under side of the lever, in combination witha stud to carry the anti-friction truck. provided with a shoulder orcollar to bear against the under side of the lower portion of the box, ashank extending' up through both parts ofthe box, and a nut bearing uponthe upper portion ot' the box, to bind the two parts together, and bothto the lever, by forcing the lips on the two parts of the box hard uponthe upper and under surfaces of the lever.

My invention further consists in the combination, with an inclinedchute, of a feed-plunger, to take a rivet from the foot of the chute andfeed it to the carrier-wheel, a lever, a connecting-rod, and apositive-inotion cam, all

connected together, and cooperating to impart to said plunger a positiveendwise mo tion in both directions.

My invention further consists in the use, in combination with anantomatically-operated drill, an intermittently-rotated carrierwheel,and a pair of clamping-jaws for holding the rivet while being drilled,of an elevated oiltank, a suitable discharge-pipe, provided with a cockto regulate the ow of oil, and a funnel to receive the oil from thepipe, and direct it upon the drill.

My invention further consists in the use, in a drilling-machine,provided with an elevated tank to supply oil to the drill, of areceivingtank, placed below the drill, in position to catch the oil andthe chips cut bythe drill, and having a bottoni slightly inclined, sothat the oil will drain away from the chips; a secondary tank, placed ata lower level, into which the oil drains from the receiving-tank; and apulnp, adapted to draft from said secondary tank and discharge into theelevated tank, from which it again ows by the action of gravity tolubricaie the drill.

My invention further consists in the use, in combination with anintermittentlyoperated carrier-wheel, provided with a series of pocketsin its periphery, each adapted to receive and carry a rivet to thedrilling-tool, an in clined chute, and a reciprocating plunger, arrangedto niove in a suitable channel-way and feed the rivets successively fromthe foot of the chute to the pockets in the carrier-wheel, of anautomatically-operating stop mechanism nr""imanniilliiilniiiiilllilililiinuiiiiiiiniiiiiiiniliiiiniiiiiniiiliiiwiiuiiiiniiiiiiiiniiiihuniiiiiniiiiiiiuiiiiinlilmiiniiiiniiiliiniitiiiniiiiiilinnnlnilutlunamwmttadapted to test every rivet that has passed the drill, and, if it isdrilled to the proper l depth. discharge it from the wheel into thedischarge-chute or channel-way; but if. for any reason, a rivet shouldpass the drill and l arrive at the place for discharge without bei ingcompletely drilled, the same mechanism will canse the stoppage of themachine and sound an alarm, the details of which mechanism will be bestunderstood in connection with i the description ofthe drawings.

My invention further consists in the use, in combination with anintermittently-rotated carrierwheel, provided with a series of pock- .iets, an inclined chute, down which the rivets slide in a single line, areciprocating plunger, adapted to feed the rivets in succession from thefoot of said inclined chute to the carrierwheel, and a discharge-chuteor channel-way in line with the feed plunger, of a pivoted orspring-operated gate, extending across said discharge-chute orchannel-way parallel with and close to the side of the carrier-wheel,and adapted to swing to one side to allow the passage of a rivet, andthen spring back to its normal po sition to close the side of the pocketin the carrier-wheel, and prevent the solid rivet being' fed into thepocket from being thrown too t'ar.

My invention further consists in the use of a driving pulley mountedloosely upon its shaft so as to revolve freely thereon, and made toengage therewith and impart motion thereto by means of a detent notchcut in one end of its hnb,and a corresponding tooth set 1in or formedupon the shaft, and a spring adapted to move said pulley in thedirection of the length of the shaft and cause said tooth and notch toengage, said tooth and notch having their bearing sides made tapering,or at an angle to the axis of motion about which said pulley revolves,so that if, for any reason, the resistance to the rotation of thecam-shaft is increased beyond a given point the drivingpulley will bemoved on its shaft, disengaging the tooth from the notch, and saidpulley will revolve upon its shaft without imparting motion to theseveral parts of the machine.

My invention further consists in the use, in combination with adriving-pulley fitted to revolve freely upon its shaft, or to be engagedtherewith and impart motionthereto by being moved along said shaft inthe direction of its length by the pressure ot' a spring, and adapted tobe disengaged again by an increase ot' resistance of a spring-pawlattached to and revolving with the pulley, and a circumferential groovecut in the shaft in such a position that when the driving-pulley isdisengaged from its shaft by being moved along said shaft against thetension ot' the spring said pawl will drop into said groove and preventfurther engagement of the pulley with the shaft till attended to by theoperator.

My invention further consists in combining, with said loosely-attacheddriving-pulley, a bell, so arranged that when said pulley is revolvedupon its shaft said bell will continue to sound an alarm to call theattention ofthe operator to the fact -that something Ais wrong with themachine.

My invention further consists in mounting the drill-spindle in bearingshaving a mortise made radially through that half toward which the beltwhich drives the spindle draws, into which is fitted a half box made ofa block of Babbitt metal, or other suitable bearing composition, in sucha manner that it may be moved radially therein, in combination with afollower-plate resting upon the top or outer end of said half box, and aset-screw adapted to bear upon said follower and force said half boXtoward the shaft to take up the wear and keep the drill-spindle in line.i

My invention further consists in the oombination with a drill-spindlemounted in bearings in such a way that it may be rotated and movedendwise therein, and provided with a collar at its rear end, a yokeadapted to bear against the rear end of said spindle, and also embracesaid spindle forward of its collar, and provided with one or moreguidepins to prevent rotation thereof bythe revolution ofthedrill-spindle of a pathcam adapted Vto impart to said yoke, and throughit to the drill-spindle, a positive forward and backward motion, and astand adapted to support said yoke nearly under the point acted upon bythe cam to prevent the downward thrust of the cam from unduly springingsaid yoke and causing it to bind upon the drill-spind-le.

Figure l of the drawings is a plan of my improved automaticdrilling-machine. Fig. 2 is a front side elevation, with a portion ofthe oil-supply tank shown in section. Fig. 3 is a back side elevation.flfig. 4 is a sectional ele vation ofthe drivingshaft and itsappendages. Fig. 5 is a central vertical and longitudinal section. Fig.6 is an' elevation of the inner end ofthe supplementary or removableframe, and the rivet separating, feeding, and testing devices mountedthereon. Fig. 7 is a transverse section of the supplementarycarrierwheel and the shield-stands on line a: m, on Figs. l, 2, 3, 5,and 8. Fig. 8 is a vertical seotion on line y y on Fig. 6. Fig. 9is asection through carrier-wheel shaft onl line z e on Fig. 6, showingsupplementary frame and stop mechanism in elevation. Fig. l0 is a detailillustrating the relation-ofthe detent lockingbolt to the cam forvoperating it. Fig. ll is an elevation of the cam, cam-lever, and aportion of the connecting-rod for imparting an intermittent rotarymotion to the carrier-Wheel. Fig. l2 is a transverse section of thelever for operating the clampinggjaw on line 'v fv, and illustrating themanner of applying and adjusting the cam-truck. Fig. 13 is an endelevation of the drillvspindle yoke, and the stand for supporting thesame.

Thesame letters of reference refer to the same parts in all of thedrawings.

Ais the main frame of the machine mounted upon suitable legs B, portionsonly of which are shown.

C is the driving-shaft. operated by a belt, (-not shown,) acting uponthe pulley D, and provided with the worm C1, which meshes into and actsupon the worm-wheel E secured to the outer end of the shaft El, which ismounted in the bearings Al A1 on the frame A, and has mounted thereonbetween said bearings, the disk path-cam F, and the two cylinderpathcams a and al.

G is a drill spindle mounted in bearings A2 A2 of the frame A in such amanner that it may be revolved and moved endwise therein at the sametime, and provided with the pulley Gl, by means of which and a belt (notshown) rotary motion is imparted thereto.

H H1 is a yoke made in two parts, connected together by the rods b b,which tit into suitable holes in the bearing A2, one part H of the yokebearing against the rear end of the spindle G, and the part H1surrounding the spindle in front of the collar c formed on the rear endof said spindle, in such a manner that, while the spindle may berevolved about its axis at a high rate of speed without imparting anymovement to the yoke, any motion imparted to said yoke in the directionof the length of the spindle either forward or backward will cause acorresponding-inotion of the spindle.

The yoke H H1 is provided upon its under side with the tongue or slide 3fitted to and adapted to reciprocate in the groove 4 formed in the upperside of the stand H2, and carries the cam-truck c1, which lits into thepath c2 in the cam F, by means of which a positive endwise motion inboth directions is imparted tol the drill-spindle to feed the drill toits work and withdraw it from the rivet when the drilling is completed.

Upon the'forward end ot' the spindle G is screwed a drill-chuck, G2, inwhich is carried a drill, d, oi'l suitable size, and adjusted to theproper length to drill the rivet to the required depth when the cam F 02has forced the spindle G to the extreme of its forward motion.

J J are two'levers arranged upon opposite sides of the drillspindle andequidistant therefrom, having formed in their front ends slots to engagewith the clamping-jaws g g, and pivoted at l1l to the frame A, the longarms of said levers extending toward the rear of the machine, and havingformed therein, directly over the cams a and al, slots ff, in which arelitted. so as to be readily adjusted transversely of said levers, therectangular boxes J1, each made in two parts, provided with lips, andclamped together, so as to cause said lips to bear hard upon the upperand under surface of said levers by means of a binding-bolt, h1, and nuth2, the adjustment of said boxes being effected by means of the screwsJ2.)2 working in screw-threads formed in the stock of said levers, andconnected to said boxes so as to impart thereto a positive motion inboth directions.

The binding -bolts h1 also carry the camtrucks h3, which tit into, andare acted upon by, the paths i'ormed in the peripheries of thecylinder-cams c and al, which serve to impart to the levers J J an equaland simultaneous motion in opposite directions.

The shaft El has, secured to the end opposit-e to the Worm-wheel E, andoutside of the frame A, the path-cams E2 and E3 and the face-cam F1.

The path -cam Ez engages with and acts upon a truck mounted upon a studset in the side of the lever F2, which is pivoted to the stand l3secured to the side of the main frame A, and imparts to said lever anintermittent vibratory motion.

The lever F2 is connected to the three-armed lever K, mounted loosely onthe end of the shaft j, by the link or connecting-rod K1, and the leverK is connected by the link K2 to the arm L secured firmly to the end ofthe rocker-shaft k.

rlhe upper end of the lever K has pivoted thereto the pawl l, whichengages with the ratchet-wheel l1 secured firmly to the shaft j, theform of the cam E2 and the arrangement of the levers F2, K, and L, linksor rods K1 and K, the pawl l, and ratchet-wheel l' being such that eachrevolution of the cam-shaft will impart an intermittent rotary motion tothe shaft j, and an intermittent vibratory motion to the shaft k.

The shaftj is mounted in bearings in the supplementary frame M, and hassecured thereon in the center between the two side frames, and directlyin front of the drill d, the carrier wheel or disk m, the outer edge ofwhich is made of a thickness about equal to the diameter ot' the rivetto be drilled, and has cut `through said thin portion a series ot' slotsor pockets, n, ot' a shape corresponding to the rivet, as seen inelevation, said pockets being equidistant from each other, and so formedas to receive the rivet with the head toward the axis of the wheel, asshown in Fig. 5.

The shaft j also has secured thereto the wheel or disk N, having formedin its periphery a series of detent-notches, equal in number to thepockets a in the carrierwheel m, and into one ot' which is forced, bythe action of the face-cam F1, the V-shaped point or end of thereciprocating rod N l at the completion of each motion of thecarrier-wheel m, and serves to correct any irregularity in the motion ofthe carrierwheel, and to hold itin place till the clamping-jaws haveclosed upon the rivet, the detentrod bein g forced into the notch by thedirect pressure of the cam F1 after the wheel has completed its motion,and withdrawn again before the wheel commences to move again, by theaction of the spring N2 and the let-off or fall in the cam F, the rod N1being made adjustable in length, to compensate for the wear of theparts, by being made in two parts, and a coupling-sleeve, N3, connectedthereto by means ot' right and left hand screwthreads.

This method of correcting and locking .the carrier-wheel is a greatimprovement over the device used in the machine patented by me August24, 1875, inasmuch as there is less Wear to the parts, less friction toresist the movements ofthe various feeding devices,while a more perfectcorrection or registration of the carrier-wheel relative to the drill isattainable, from the factthat greater pressure can be brought to bearupon the detent-Wheel to turn it when out of place.

O O' are two stands, placed one upon either side ot' the carrier-Wheel,provided with long hubs, through which the shaft 7' passes, and securedby suitable feet to the cross-tie of the frame M.

The faces of said stands contiguous to the carrier-wheel m are cuppedout so as to form a chamber between said two stands, within which thethick portion of the carrier-Wheel may revolve, while at the same timesaid stands bear against the sides of the thin outer edge of said wheel,around the entire circumference of said wheel, to prevent the rivetsbeing displaced from the pockets, except at the points where the rivetis fed into the wheel and discharged therefrom, and at the point wherethe clamping-jaws seize the rivet to hold it while being drilled.

These stands O O are provided, on the side facing the drill-spindle,with dovetailed slides to receive the clamping-jaws g g, constructed andadapted to engage with the levers J J and be operated thereby,substantially as described in my previous patent cited above, thedifference in the two arrangements being that by mounting the jaws g gon the stands O O', instead of on the die-plate secured to the mainframe A, as described in my previous patent, the drill and jaws are mademuch more easily accessible.

The frame M is fitted to and secured upon the front end of the frame A,substantially as described in the patent referred to above.

P is a bifurcated stand, Q an inclined chute, p a curved shield, R apivoted chute mounted upon the shaft k, and carrying upon its upper sidethe hopper S, all constructed, arranged, and operating substantially asdescribed in the patent before referred to.

The rivets slide down the inclined chute Q in a single line, with theirheads all downward, till the lower rivet drops into the horizontalchannel r in front of the plunger fr', by which it is fed into one ofthe pockets n in the carrier-wheel m.

The plunger lr is formed upon or securedto the front end of the bar o,fitted to move in a dovetailed slide, formed in the upper surface of theshield-stand O', directly over and parallel with the shaft j, said slidebeing provided with a gib and set-screws, by means of which the frictionof said bar o may be regulated.

Directly under the bar o a circular recess is formed in the shield-standO', in which is placed a spiral spring, o1, and the followerdisk o2,which is pressed upward by the spring o1, hard against the under side ofthe bar o, as shown in Fig. 7, for the purpose of increasing thefriction on the bar o, so that it will remain in a state of rest ateither extreme of its endwise movement, till moved by the directapplication of force thereto.

Upon theu'pper side of the slidingbar o is secured a supplementary bar,s, heldin place by the screws s1 passing through oblong slots s2, andscrewed into the bar o in such a man ner that the bar s-may` bevmovedupon the bar o a short distance in either direction, without affectingthe position of the bar o.

A reciprocating motion is imparted to the bar s, and through it to thebar o, by means of the elbow-lever T, pivoted to the frame A at u, oneend of which engages with the pin s3 set in the bar s, and atthe otherend is pivoted to one end of the connecting-rod U, the opposite end ofwhich is connected to the movable end of the cam-lever U', to which anintermittent vibratory motion is imparted by the path-cam E3.

V is a light lever, pivoted at t to the bar o, and carrying at the endtoward the front side of the machineA the vertical adjustable pin t1, soarranged that when the lbars o and s are moved to the extreme of theirbackward motion said pin will stand directly over the edge of thecarrier-wheel, with its center-line coinciding with the center of apocket therein, with its point or lower end far enough above the same toclear the longest rivet to be drilled.

To the rear end of the lever V is pivoted the link t2, which is pivotedat its opposite end to the link t3, which is fitted to move up and downbetween two ears u1 u1, formed 'on the rear end of the bar o, the linkt3 being guided in itsupward and downward motions by a fulcrum-pin, u2,projecting from opposite sides thereof into oblong vertical slots us cutthrough the ears u1, as shown in Figs. 6 and 9. Y

The link t3 extends below the pin u2, and rests upon the movable end ofthe spring V1, the tension of which tends to hold the pin u2 hardagainst the upper ends of the slots a3, as shown in Fig. 6.

The rear end of the bar s is connected, by means of the double link fv,o, to the central joint ofthe toggle-links t2 and t3 in such a mannerthat the first part of the forward motion of said bar will tend tostraighten the toggle formed by the links t2 and t3, and if there is noimpediment in the way of the free descent of the pin t1 the rear end ofthe lever V will be raised, causing a corresponding depression of thefront end of said lever, the pin t1 entering the ldrilled shank of therivet, held in the pocket of the carrier-wheel, at which time the rearend of the slots s2 coming in contact with the screws s1, a continuationof the movement of the lever T will cause the bar o, plunger r', and thelever V to be moved endwise toward the front side of the machine, thepin t1 discharging the drilled rivet from the pocket of thecarrier-Wheel into the discharge-chute or channel-way V2, extending fromthe carrier-wheel to the front side' oi`-the frame, in line with thechannel- Way r' and the plunger 1"', feeding an undrilled rivet into thesame pocket, when the forward motion of the lever V and plunger ceases,and they remain in a state of rest till the carrier-wheel has movedabout its axis a distance equal to the distance between two pockets,when the motion of the lever T is reversed, the first effect of which isto move the bar s upon the bar o, bend the toggle-joint, and cause thefront end of the lever V to be raised, when the bar o and lever V willbe moved back to their starting points.

Wis the lower arm of the shipper-lever, which controls the belt whichimparts motion to the counter-shaft, from which the machine is driven,the upper arm of said lever being broken away.

The extreme lower end of the lever W has secured thereto, or formedthereon, a slightlyprojecting tooth, w, which, when the lever W is inposition to hold the belt onto the tight pulley on the counter-shaft,(not shown,) engages with the catch w', projecting upward from thespring V1, while the spring W tends to move the shipper-lever W in thedirection to ship the belt onto the loose pulley.

Now, if, when the bar s begins to move toward the front of the machine,there should happen to be an undrilled or an imperfectlydrilled rivet inthe pocket of the carrierwheel, the pin t1 would be intercepted beforecompleting its downward stroke by coming in contact with the solid metalof the rivet, which, presenting more resistance than the spring V1, thepower of the toggle joint would be exerted downward, depressing thespring V1, releasing the shipper lever W from the catch w', when' thetension of the spring W will move the shipper-lever and throw the beltonto the loose pulley of the counter-shaft, st opping the machine, andringing the bell X, to call the attention of the operator.

The discharge channel-way V2 may discharge into the shallow-tray likeextension V3, the bottom of which is on a level with the bottom of thechannel-way at its junction therewith, so that the rivets may bedischarged into said tray with their tubular ends upward, or said traymay be dispensed with, and the rivets may fall from the end of thechannel-way V2 into any suitable receptacle placed beneath saidchannel-way for the purpose.

The channel-way V2 is provided with a gate, a2, to close the entrancethereto held in position with its side in line with the side of thecarrier-wheel to prevent the momentum of the plunger' r1 from throwingthe rivet in .front ofit through the pocket of the carrier-wheel, so faras to present an obstruction to the ro- 6 IS'SJ tation of said wheel,said gate swinging about its pivot to allow the drilled rivet to bedischarged into the channel-way V2, and thrown into position again bythe spring a3 in time to intercept the solid rivet being fed into thepocket.

To the upper side of the shield-stand O is secured by means of thescrews b2 b2 passing through slots c c3 the bar Y in such a inanner thatit may be moved endwise in a line parallel to the motion of the plungerr', and

'having secured to or formed upon its front end the curved finger d1,having its outer end beveled or wedge shaped, and adapted to move acrossthe upper surface of the inclined chute Q, near its lower end in such amanner as to lorce the lower rivet in said chute into the channel-way rin front of the plunger' r', and retain the other rivets in said chuteabove said wedge till the plunger r has passed the mouth ot' the chute,said linger d' and bar Y being moved in one direction by the spring d2,and in the opposite direction by the end of the plunger r coming incontact with the finger d1.

Z is an oil-tank placed in an elevated posit-ioii, and provided with adischarge-pipe,e, and cock e1, by means ot' which the oil contained insaid tank may tlow to and be discharged into the fumiel e2, by which itis directed to the drill.

Z1 is au oblong tank placed beneath the working parts oi the machinewith its bottom slightly inclined toward the rear, and supportingtherein the shallow tray Z2, having its bottom raised some distanceabove the bottom of Z1, and inclined toward the front or hopper end ot'the machine, and a portion of it perforated or made of line wirenetting, so that While the pan Z2 will catch and hold the metal chipsproduced by the drill the oil will flow through its perforated bottominto the receiving-tank Z1, whence it tlows into the secondaryreceiving-tank Z3 placed at a lower level than Z1.

A1 is an oil-pump, the piston of which is operated by the connecting-rmlf1 and crankpinjz set in the disk f2, secured upon the end ofthedriving-shaftU, said pump beingadapted t0 draw oil from the tank Z, anddischarge it through the pipe f4 into the elevated tank Z.

B1 is a lever pivoted to one side ot' the frame A, and carrying thetappet-rod g1 adapted to strike the inclined chute Q, when said lever isvibrated to iar said chute and insure the descent of the rivets.

Motion is imparted to the lever B1 in one direction by the oscillationsof the pump connecting-mdf, and in the other direction by the spring g2.

The driving-pulley l) is titted loosely upon the shaft (l, or in such amanner that it may be rotated thereon, and moved along said shaft in thedirection of its length, and has formed in one end of its huh theV-shaped radial notch h4, which engages with a correspondingly-shapedprojection, h5, on the contiguous side of the collar G1, secured uponthe shaft C.

The pulley D is forced toward the collar O1 by the spiral springt', thetension of which may be increased or diminished at will by means of thenut 'i1 and check-nut i2.

The pulley D has attached thereto, so as to revolve with it, aspring-pawl, la', adapted to engage with the circumferential groove 'i3when the pulley D is moved along the shaft Cfar enough to disengage theprojection h5 from the notch h4.

B2 is a spring secured by one end to the stand O2, which supports therear end of the shaft C. and extending parallel, or nearly so, with theshaft, till its opposite end nearly reaches the web of the pulley D, andhas attached thereto the bell D'.

Tlie web of the pulley D has set therein, so as to project therefrom, apin, 7'2, so arranged relative to the spring B2 that when the pulley Dis engaged with the shaft C, so as to revolve therewith, said pin willpass the end of said spring without striking it; but when the pulley Dis moved along the shaft to disengage it from the collar G1, the pin j2will strike the end of the spring B2 at every revolution of the pulley Dand ring the bell D.

The object of this arrangement of the driving-pulley is to stop themachine whenever, by the breaking of a drill, the disarrangement ot' arivet in the carrier-wheel, or other cause, the resistance to the'operations of the machine is increased beyond what the tension of thespring t will counteract. Each of the caps of the boxes A2 has formedtherein a vertical mortisc, in which is placed the Babbitt box A3, andfollowerplate L2. resting thereon and adapted to be adjusted by theset-screw t3, alid having its bearing in the secondary cap Z1, as shown,to compensate for the wear occasioned by the draft of the belt whichdrives the spindle.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is as follows:

l. In combination with the supplemeii tary frame M, movable upon themain frame A, the clamping-jaws g g, mounted upon said supplementaryframe M, and adapted to engage with the levers J J when the frame M issecured in position, and to be disengaged therefrom when the frame M ismoved back, substantially as and for the purposes described.

Z. The combination of the carrier-wheel m, the inclined chute Q, thereciprocating plunger r', and the discharge channel-way V2 extendingfrom the carrier-wheel directly opposite the plunger lr', substantiallyas described.

3. The discharge channel-way V2, having formed upon its outer end theshallow traylike extension V3, constructed and arranged substantially asdescribed.

4. The combination ofthe inclined chute Q, the reciprocating plunger r',and the reciprocating finger d1, provided with an inclined orwedge-shaped end, all constructed, arranged, and adapted to operate asand for the purposes described.

5. In combination withthe carrier-wheel m, adapted to be intermittentlyrotated about its axis, and an automatically-operated drill, thedetentwheel N, the reciprocating rod N1, provided with a V-shaped pointor end, and the cam F1 and spring N2, all arranged and adapted tooperate substantially as described.

6. The combination of the clamping-levers J J, having formed in theirrear ends rectangular slots extending transversely thereof, the boxes J1provided with lips and carrying the cam-trucks h?, and theadjusting-screws J2 J2, all arranged and adapted to operate, as and forthe purposes described.

7. The box J1, made in two parts, provided with lips, and bound togetherand to the-lever J by the bolt h1, in combination with theadjusting-screw J2 connected thereto, so .as to impart a positive motionto said box in both directions, substantially as described.

8. The combination of the inclined chute Q, the feed-plunger r', adaptedto take a rivet from the foot of the chute and feed it to thecarrier-wheel, the lever T, connecting-rod U, cam-lever U', and thepath-cam E3, all adapted to impart to said plunger a positive motion inboth directions, substantially as described.

9. In combination with an automaticallyoperated drill, anintermittently-rotating carrier-wheel and a pairofclamping-jaws, adaptedto seize and hold the rivet while it is beingl drilled, an elevatedoil-tank, a suitable discharge-pipe provided with a cock to regulate theiow of oil and a funnel to receive the oil and direct it upon thedrill', substantially as described.

10. The combination, ina drilling-machine, of the elevated oil-supplytank Z, the receiving-tank Z1, the secondary tank Z3, and the pump A4,adapted to draft from the secondary tank Z3 and discharge into thesupply-tank Z, substantially as described.

11. In combination withan intermittentlyoperated carrier-wheel, providedwith a sexies of pockets, each adapted to receive and carry a rivet tothe drilling-tool, an inclined chute, and a reciprocating plunger,adapted to feed the rivets successively from the foot -of the chute tothe pockets in the carrier-wheel, the lever V, pivoted to theplunger-carrier, and carrying at one end the testing-pin t1, andconnected at its other end with a toggle having no fixed fulcrum, andthe bar s, movably attached to the plunger-carrier, and connected to thecenter of the toggle, all arranged and adapted to operate substantiallyas described.

12. The combination ofthe carrier-Wheel m, inclined chute Q, plunger r',lever V, testingpin t1, a toggle having' no lxed fulcrum, and adapted toimpart motion in either of two opposite directions, the reciprocatingbar s,

the spring V1, provided with the catch w', and the shipper-lever W,adapted to engage withla the catch w', and be held thereby against thetension of the spring W', substantially as and for the purposesdescribed.

13. In combination with the shipper-lever W, held in position by thespring V1 and catch w', and the spring W', adapted to move the lever Waway from the catch w when the spring Vl is depressed, the bell X,flexibly connected to the shipper-lever, substantially as shown anddescribed.

14. The combination of the carrier-Wheel m, the inclined chute Q, thefeed-plunger rf, the lever V, provided with the testing-pin t1, thedischarge channel-way V2, and the spring-operated gate a2, all arrangedand adapted to operate as and for the purposes described.

l5. rEhe combination of the pulley D, provided With the beveled-sidednotch h4 in the end of its hub, and mounted loosely upon the shaft G, sothat it may he revolved or moved endwise thereon, the collar G1, securedto the shaft G, and having formed upon its radial face, contiguous tothe hub of the pulley D, the bevel-sided tooth h5, and the spring i, allarranged and adapted to operate as and for the purposes described.

16. The combination of the pulley D, provided with notch h4, and mountedloosely upon the shaft C, the spring t', the collar G1, provided withthe tooth h5 and the circumferential groove i3, and the spring-actuatedpawl k', all arranged and adapted to operate as and for the purposesdescribed.

17. In combination with a driving-pulley adapted to be engaged with itsshaft by being moved lengthwise of said shaft by the pressure of aspring, and to be disengaged therefrom by an increase of resistance tothe revolution of said shaft,l the spring B2, having secured thereto orotherwise connected therewith the bell D', and the pin j2, projectingfrom and revolving with the pulley D, all arranged and adapted tooperate as and for the purposes described.

18. In combination with the rotating and reciprocating drill-spindle G,the Babbitt metal half-boxes A3, fitted to and movable in mor- `tisesmade through the caps of the spindlebearings, the follower-plates Z2,and the setscrews L2, having their bearings in the secondary caps Z4,substantially as described.

19. The stand H2, provided withthe groove or slide in its upper surface,in combination with the yoke H H1, provided with the tongue tted to andadapted to reciprocate in the groove, substantially as and for thepurposes described.

Executed at Boston, Massachusetts, this 29th day of September, 1876.

' MELLEN BRAY.

Witnesses:

N. C. Lot/nahen, E. A. HEMMENWAY.

